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Need help with engine diagnosis... HYUNDAI FTL

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Old Nov 9, 2009 | 08:55 PM
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Default Need help with engine diagnosis... HYUNDAI FTL

Ok so I need some help with my beater car, an 02 Hyundai Accent, 1.6 DOHC. I know its not an LSX, but the same principles will apply here and I know this site is very helpful.

Here are the facts:

There is a lot of water in the oil.
There is definately exhaust in the coolant. Quite a bit actually.
The car will overheat after about 20 mins of driving, and the higher the rpm, the worse it is.
There is no noticable coolant in the exhaust, only the other way around. No white steam in the exhaust, and it smells normal.

The car idles rough, but runs PERFECT above 1200 rpm.
I pulled the head. The gasket is fine and I don't see any noticeable cracks in the head. The cylinder walls are fine also. Also, when I pulled the head, some bolts were tight, but not as much as the others. Nothing that would cause this. Any ideas? Warped head maybe?

Any help would be GREATLY appreciated!!!
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Old Nov 10, 2009 | 09:39 AM
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Check to make sure the deck of the head is still straight. If not have it milled and re install with new fasteners and gasket.
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Old Nov 10, 2009 | 10:21 AM
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Im gonna have it pressure tested today to verify it has no cracks, and if it doesn't have any then I will have it surfaced and hope that will do.
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Old Nov 10, 2009 | 10:37 AM
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How many miles?

Time for a water pump maybe?

Not sure how that would cause exhaust in the coolant, but it would for the coolant in the oil.
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Old Nov 10, 2009 | 11:26 AM
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80K miles. And the water pump in fine.
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Old Nov 10, 2009 | 02:39 PM
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I had a crack in a spring pocket in a head and it led to a cross polination of coolant and oil. They were both where the other should have been..
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Old Nov 11, 2009 | 12:24 PM
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I was thinking head gasket by what you are saying.
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Old Nov 11, 2009 | 12:34 PM
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The gasket was fine. Nothing wrong with it. Ill post when I hear from the machine shop.
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Old Nov 14, 2009 | 07:46 PM
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Got the results... The head was a little warped, so it was an easy fix. Gonna put her back together tomorrow! Yay, Hyundai!
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